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Old 12-29-2010, 04:13 PM   #1
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Default MRX-3000 and Tamiya m04

Hey guys,
Just got my mrx-3000 receiver (I think it is the same as a SR300) that I am going to put in my tamiya mini (m04). I am a little confused on how this goes together. I am using a TEU-101BK speed control. My steering servo plugs into the receiver alright, but there is an extra tab on the esc that is preventing me from plugging it it. Do I need to change the connector, or can I cut the tab off? Also there is a red connector which is not shown in the manual, I assume it is to provide power to the receiver, do I have to change the connector on that as well?

Thanks!
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Last edited by OFFroadrunner; 12-29-2010 at 04:36 PM.
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Old 12-29-2010, 04:38 PM   #2
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The wiring for the Tamiya speedo is unusual and should be explained in it's manual.

But basically, steering servo in channel one, ESC in channel 2, the extra red plug in a spare slot, noting correct polarity.
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Old 12-29-2010, 04:46 PM   #3
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Ok, I just noticed that the instructions say you can cut the tab off. The red one doesn't look like it should fit, it only has 2 holes where the receiver has 3 prongs. It will fit but it looks odd.
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Old 12-29-2010, 04:55 PM   #4
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The stock brushed Tamiya speed controls use a seperate red JST plug that powers the receiver. It connects to the Aux/Batt slot on the receiver. The MRX-3000 Losi receiver is the same as the Spektrum SR-300 and the Aux slot on these receivers do not accommodate the red JST unless you make a modification.

Either remove the two bumps from the JST connector or carefully enlarge the Aux slot on the receiver. Either way, be sure the black wire on the JST connector goes to the outside edge of the receiver.
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Old 12-29-2010, 04:59 PM   #5
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Thanks!!!
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Old 12-29-2010, 05:12 PM   #6
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Soory, just to clarify. During normal operation (after binding) the, battery goes in the AUX slot? Or the bind slot?
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Old 12-29-2010, 05:58 PM   #7
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Quote:
Originally Posted by OFFroadrunner View Post
Soory, just to clarify. During normal operation (after binding) the, battery goes in the AUX slot? Or the bind slot?
The red JST connector must be in the Aux slot otherwise there will be no power to the receiver and you cannot do the bind. The bind plug would go into the bind slot.
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Old 12-29-2010, 09:35 PM   #8
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Cool, thanks! I've got everything up and running now
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